<template>
    <div class="login_container">
        <div class="login_box">

            <div class="avatar_box">
                <img class="img_box" src="../assets/logos.jpg">
            </div>

            <el-form  class="login_form" :model="users" :rules="loginFormRules" ref="users">
                <el-form-item prop="username">
                    <el-input v-model="users.username" placeholder="请输入账号" prefix-icon="el-icon-user-solid"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input v-model="users.password" type="password" placeholder="请输入密码" prefix-icon="el-icon-s-goods"></el-input>
                </el-form-item>
                <el-form-item class="btns">
                    <el-button type="primary" @click="loginForm('loginFormRef')">登录</el-button>
                    <el-button type="info" @click="resetForm">重置</el-button>
                </el-form-item>
            </el-form>

        </div>
    </div>
</template>

<script>
    import { Login } from "../api/user";

    export default {
        name: "Login",
        data() {
            return {
                users: {
                    username: '',
                    password: ''
                },
                loginFormRules: {
                    username: [{ required: true, message: '请输入用户名', trigger: 'blur' },
                        { min: 3, max:5, message: '长度在 3 到 5 个字符', trigger: 'blur' }],
                    password: [{ required: true, message: '请输入密码', trigger: 'blur' },
                       { min: 6, max:15, message: '长度在 6 到 15 个字符', trigger: 'blur' }]
                }
            }
        },
        methods: {
            // 重置form表单
            resetForm() {
                this.$refs.users.resetFields()
            },
            // 登录
            loginForm() {
                // 表单验证
                this.$refs['users'].validate(valid => {
                    if(!valid) {
                        return
                    }else {
                        Login(this.users).then(res => {
                            if (res.data.meta.status === 200) {
                                this.$message({
                                    message: '登录成功',
                                    type: 'success'
                                })
                                window.sessionStorage.setItem('token',res.data.data.token)
                                this.$router.push('/home')
                            } else {
                                this.$message({
                                    message: '登录失败',
                                    type: 'error'
                                })
                            }
                        })
                    }
                })
            }
        }
      }
</script>

<style scoped>
    .login_container {
        background-color: #2b4b6b;
        height: 100%;
    }

    .login_box {
        width: 450px;
        height: 300px;
        background-color: #fff;
        border-radius: 3px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%,-50%);
    }

    .avatar_box {
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow:  0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background-color: #fff;
    }

    .img_box {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }

    .login_form {
        position: absolute;
        bottom: 0px;
        width: 100%;
        padding: 0 20px;
        box-sizing: border-box;
    }

    .btns {
        display: flex;
        justify-content: center;
    }


</style>
